Stop-motion for spinning and twisting machines.



PATENTED JULY 14,1908.

APPILIGATION FILED AUG.6, 1907.

w wg

4 UNITED SAM DEAN, or LOWELL, MASSACHUSETTS vS'ICP-MO'IIION FOR SPINNINGAND TWISTING MACHINES.

Specification of Letters Patent.

Patented July 14,1908.

Application fil'ed August 5; 1907? Serial No. 387495;

To all whom it may concern? I Be it known that I, SA DEAN, asubject ofthe United Kingdom of Great Britain and Ireland, residin at Lowell, inthe county of Middlesex and setts, have invented a certain'new anduseful Im rovement in Stop-Motionsfor Spinning and Twisting Machines, ofwhich thefollowingris a specification. I I his invention relates tostop-motions for spinningand twisting machines, in which a using andfalling late or rail is used to control the laying ol the yarn on thebobbin, spool or other tube, and is particularly intended for worstedcap-spinning and twisting machines.

In ca '-spinnin machines, such as are represente in the rawing, thecapsare su orted on stationary spindles-and the b0 ins or s ools are turnedon the s indles by the usua means (not shown) an the bobbins are raisedand lowered by a lifter-plate to put successive layers of yarn on saidbobbin, the lower limit of this vertical traverse increasing until thepredetermined quantity of yarn is laced on the bobbin, the yarn beingguide to its place on the bobbin by the bottom edge of the cap in theusual manner. Thelifter-plate is controlled by the usual verticalguide-rods; which pass throu h transverse rails whichform a part of t eframe of the machine inthe usual manner .and the stop-motion device isut in operation to stopthe machine by t e descent of one of thesedistance.

The object of this'invention is' to stop the machine as soon as thebobbin or other yarnreceiver has taken on a predetermined quantity ofyarn, instantly, and to prevent the machine from being started toosuddenly in such a manner as by the shock of starting to 'Fig. 1.

A indicates the frame; a, the bottom rail; a the spindle-rail; B,stationary spindles supporting the caps I); C, the tubes or shellsprovided with whirls c, which are rotary on ommonwealth of Massachu-.

guide-rods to a predetermined.

the spindles B, being driven by bands (not shown) connecting said whirlsto the bandcylinder D; E, the lifter-plate; ie, the lifterrods; F,bobbins, carried by the tubes C which rest on said lifter-plate; e thelongitudinally reciprocating chain rod which,

through chains e and pulle s e actuates the lifter-plate; the twist-wheeG twine-wheel G, fast on the main-shaft D or cylindershaft, the belt gconnecting said twine-wheel to said twist-wheel; a inlon 9 fast on theshaft of said twist-whee and engaging a gear 01 fast on the shaft 11 ofthe bottom front roll I; the front rolls I I, the carriers J J; the backrolls K K; the fast ulley/d and loose pulle d on the main shaft D ;theseparts are al of the usual construction and operation.

Usually the non-rotary horizontal shi per-rod L carrying a belt-fork Zor be tguide isiformed in a single piece or section and carries a nut Z-engaged by a horizontal screw M which may be turned by a crank m tomove said shipper-rod longitudinally to ship the belt D from one of thepulleys d d to the other, to sto or start the machine. I retain theseparts, but I make the shipperrod in two alined'sections, l 1 each ofwhich is provided with a hook or coupling-counterpart Z Z? adapted toengage the hook of the other part, so that by turning the screw M,

in; the proper direction I can shift the belt D from the loose pulley tothe fast pulley, to start the machine.

It will be understood that the lower limit of the vertical traverse ofthe lifter-plate descends, as the yarn is woundupon the bobbins from thebottom to the top of said bobbins.

I provide means by which as soon as the bobbins are filled to apredetermined height, the books I Z will be uncoupled and the section Iof the shipper-rod which carries the belt-fork will be movedlongitudinall by a spring,--represented as a helical spring surroundingsald section I and compressed between a stationar bracket a on the frameA and a collar fixed on said section I and will shift the driving belt Dfrom the fast pulley d to the loose pulley (P.

I pivot a lever N at n on the frame near the inner end of the section 1and on the rear end of this lever I support the guide Z in which saidsection slides. The other or front .end of said lever N reaches in frontof the frame A and has jointed to it at n a link n tubes G and whichasses loosely down through a bracket whic extends from one of thelifter-rods e and isrigidly secured. thereto. The lower end portion ofthe link n is screw-threadedat n to engage a nut n and check-nut narranged below the bracket 6* and adapted 'to be struck by said bracketin its descent the spring I outward until the collar Z strikes the frameA and transfers the belt from the fast pulley (i to the loose pulley dallowing the machine to stop instantly.

When it is desired to start the machine after doffing, placing emptybobbins on the adjusting the builder-motion by the usual means to thestarting point, the screw M is turned to move the hook Z towards thebelt-fork, causin the inclined under surface Z of the hook to ride overthe correspondingly inclined upper surface Z of the hook Z until thepoint or free end of said hook Z strikes a stop projection Z and saidhook 1 drops into engagement with the hook Z restoring the lever N andlink 12, to normal position and the screw M is then turned in the oposite direction to draw the drivin belt D s owly from the loose pulley dto t e fast pulley d and starting the ma chine without shock.

I claim' as my invention 1. The combination in a twisting or s in-v ningmachine of a drivin shaft, a fast pu ley and a loose pulley bot on saidshaft, a

shipper-rod formed in two sections, each provided with a hook adapted toengage the of the shipper is thrown by hook of the other section, alever, a bearin for one of said sections su ported on sai lever, abelt-fork carried l iy the other of said sections, a lifter-plate, meansfor giving the same a vertical traverse, a lifter-rod, movable with saidlifter-plate, connecting means between said lifter late and said lever,adapted to rock said lever and to uncouple said sections by the descentof said lifter-rod, a spring to move the belt-fork carrying section ofsaid shi per rod from the fast pul ey to the loose puliey and adrivingbelt guided by said fork.

2. The combination in a twisting or spinning machine of a driving-shaft,a driving belt, a fast pulley and a loose pulley both on said shaft, aship er-rod formed in two sections, each firovlcfed with a hook adaptedto engage the 00k of the other section, a lever, a bearing for one ofsaid sections supported on said lever, a belt-fork carried by the otherof said sections and guiding said belt, a lifter-plate, means for givingthe same a vertical traverse, a lifter-rod movable with said-lifterplate, a bracket carried by said lifter-rod, a link jointed to saidlever and passing loosely through said bracket, an adjustable stopcarried by said link below said bracket and adapted to be struck by saidbracket in the descent of said lifter-rod to a predetermined extent, torock said lever and to uncouple said section, and a spring to move thebelt-fork carrying section of said shi per from the fast pulley to theloose pu ey.

In testimony whereof, I have affixed my signature, in presence of twowitnesses.

SAM DEAN. Witnesses:

ALBERT M. MOORE, GEORGE W. CUMINGs.

